Daniel Measurement and Control, Inc.

Micromotion Gmbh

Michael Richard Adib Zahr

Thomas Henry Loga

Raul Almazan

Justin Blake Crouch

David J Seiler

Jack Caruthers

Raul H Almazan

A control valve includes a piston-housing having a hollow portion. The hollow portion has a first end, an open end, first and second internal chambers, and a fluid port configured to allow fluid to exit the second chamber. The first chamber is nearer the first end, and the second chamber is nearer the open end. A piston is located within the housing and is adapted for reciprocal motion. The piston includes a first and second seal-engaging portions. The first seal-engaging portion has a diameter that is less than the diameter of the second seal-engaging portion.

Flow control system and control valve having closure assistance

A surge relief valve includes a piston housing and a piston located within the housing for reciprocal motion. The surge relief valve also includes a position sensor to resolve the axial position of the piston relative to the piston housing. The position sensor includes a sensor body coupled to the piston housing and a movable element configured to move linearly relative to the sensor body and configured to move axially with the piston. At a least portion of the sensor body is located within the piston housing.

Relief valve with position indication

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College Station, TX, United States of America

Michael Richard Adib Zahr